Steam-boiler furnace



(NoModelJ) E. W. VANDUZEN.

STEAM BOILER FURNACE. No. 278,637. r I Patented May 29,1883,

N. PETKRS, Phclmlithographer. Washinghn. D. C.

- UNITED STATES PATENT @FFICE.

EZRA W. VANDUZEN, OF NEWPORT, KENTUCKY;

STEAM-BOILER FURNACE,

SPECIFICATION forming part of Letters Patent No. 278,637, dated May 29,1883.

' Application filed December 14, 1882. (No model.)

To all whom. it may concern:

Be it known that I, EZRA W. VANDUZEN, a citizen of the United States,and a resident of Newport, in the county of Campbell and State ofKentucky, have invented certain new and useful Improvements in SteamBoiler Furnaces, of which the following is a specification.

My invention relates to the construction of boiler-furnaces andtheprevention of smoke, and particularly to that class employing a blast tofeed the air into the furnace-chamber.

In a former patent Ihave-shown anddescribedatransverseair-jetdistributerarranged in front of and above thefire for the proper A represents the outer brick wall of a furnace, Bthe boiler, G the grate-bars and D a supplementary furnace built withinan arch, E, alias shown in a previous application of mine. a

In the device here shown, instead of having the wall of arch E carriedup to the boiler, I provide a space, e, above the main portion of thearch, and having a thin brick portion, 0,

built up to reach the boiler. The space 0 fur-.

nishes additional room for the proper minglingof the combustible gases,and also allows the heat to come into contact with much moreboiler-surface.

In order to properly heat the air in the blastpipes before admitting itinto 'the furnacechambr, and still not burn up the pipes, I'provide uneor-more transverse distributing pipes or chambers, F F, placed above thedoor and built in the wall, a representing a series of airdistributingjets or orifices.

, G G represent air-supply pipes, which are brought intothefurnaee-chamber at or near the bridge-wall E, thence carried alongthe V furnace-chamber, at a suitable distance above the fuel-supportiu ggrate bars to the front, and thence into the distributing-pipes F F.These pipes G G may pass down inside of the brickv injured, theessential feature of heating the air is still obtained, while the supplyof steam is superheated priorto being injected over the incandescentfuel, as more fully explained.

Another feature of my invention consists of a T-shaped injector adaptedto supply the branch pipes G G.

H represents the steam-pipe tapping the boiler; I, the air-supply pipe;J, a four-joint union, into which the pipes G G, H, and I respectivelytap, L representing the T or double steam-jet, and l ljet-orificesthereof.

N N represent tapering cones entering branch pipes G G.

Air is supplied through pipe I, and steam through. pipe H and orifices tZ. Air is driven tothe furnace through the branches G G, being largelyaccelerated by the heating of pipes G G inside of the furnace-chamber.It is a desideratum to inject into a furnace a miniherein shown.

hereinafter By connecting the air-pipes G G with the of oxygen in aheated condition is supplied to the fire, while a larger volume ofair issupplied as compared with the quantity of steam necessary to use, all ofwhich is advantageous in effecting good results in this class ofboilerfurnaces. p

I am aware that air-distributing pipes have been arranged across thefront wall of a fur pace-chamber and connected ata point out- 7 Intestimony whereofI have hereuntg set my 10 side the furnace with asteam-supply pipe, for

hand in the presence of two subscribing witintroducing combined air andsteam to the fuel; but such is not broadly claimed by me. nesses.

I claim- In a. boiler-furnace, the combination of the EZ 'VANDUZEN'transverse distributing-pipe F,branch supply- Witnesses;pipesGG",stearn-'pipe H,air-pipe Land double JNO. E. JONES,

injectorL, arranged for operation substantially 1 JNO. E. WILEs.

' as described.

